Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Central Automotive Service & Repair, Inc.
Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.
Replace or Repair
- Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at Central Automotive Service & Repair, Inc., as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
- Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.
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I was traveling from PA to CO with my son and mother. We thankfully decided to stay in Coralville for the night. We got off I-80 and my brake pedal was stiff and could barely stop. We got into the hotel around 9/10 pm on Sunday and at 8am Monday they said they could fit me in at 9 am. I took my car down and they read the check engine code and figured it out to be my vacuum pump for my brakes broke. Thankfully enough they found a part fairly quickly and fixed my car after running me to my hotel and picking me up. All was done in a timely manner all with very understanding shop guys! Highly recommend! They gave me a quote to fix my car prior to doing anything with it, with a very reasonable price!
Jess Chuckalovcak, 09/19/2021
Stopped in for an emergency repair dropping my son off to grad school. We had just finished a 19 hour drive when we had some car issues. They were amazing!! They got the car in right away and it runs better than ever! Fast, friendly, and I'm so glad we found them!! I definitely recommend Central Automotive Service & Repair!!
Jamie White, 08/17/2021
Is top notch work and great service never been disappointed in any of the work they have done on all my vehicles
Todd Carr, 06/22/2021